Home / 78,760,915.80-118,141,373.70-68,144,083.80

Finding the Fourth Proportional to 78,760,915.80, 118,141,373.70 and 68,144,083.80

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Solution

The fourth proportional to 78,760,915.80, 118,141,373.70 and 68,144,083.80 is: 102,216,125.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,760,915.80 : 118,141,373.70 = 68,144,083.80 : x
  2. Step 2: Convert to fraction form
    78,760,915.80/118,141,373.70 = 68,144,083.80/x
  3. Step 3: Cross multiply
    78,760,915.80x = 118,141,373.70 × 68,144,083.80
  4. Step 4: Simplify right side
    78,760,915.80x = 8,050,635,669,659,916
  5. Step 5: Solve for x
    x = 8,050,635,669,659,916/78,760,915.80
  6. Step 6: Final answer
    x = 102,216,125.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.